.vc_hidden-xs {
    @media (max-width: @screen-xs-max) {
        .responsive-invisibility();
    }
}
.vc_hidden-sm {
    @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
        .responsive-invisibility();
    }
}
.vc_hidden-md {
    @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
        .responsive-invisibility();
    }
}
.vc_hidden-lg {
    @media (min-width: @screen-lg-min) {
        .responsive-invisibility();
    }
}